Calculating-machine.



J. E. W. GREVE.

CALCULATING MACHINE. APPLICATION FILED nc.12. 1916.

1 247,954. Patented Nov. 27, 1917.

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CALCULATING MACHINE.

APPLICATION FILED DEC. 12. 1916.

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J. E. W. GREVE.

CALCULATING MACHINE.

APPLICATION FILED DEC. 12. 1916.

1 247,954. Patented Nov. 27, 1917.

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J. E. W. GREVE.

CALCULATING MACHINE.

APPLlCATlON FILED 020.12. 1916.

Patented Nov. 27, 1917.

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CALCULATING MACHINE.

APPLICATION FILED DEC. 12. 1915.

Patented Nov. 27, 1917.

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CALCULATING MACHINE.

Patented Nov. 27, 1917.

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CALCULATING MACHINE.

APPUCATION FILED 020.12. 1916.

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CALCULATING MACHINE.

APPLlCATlON FILED DEC. 12. 1916.

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Patented Nov. 27, 1917.

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CALCULATING MACHINE.

APPLICATION FILED DEC. 12. 1915.

1 247,954. Patented Nov. 27, 1917.

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CALCULATING MACHINE.

APPLICATION FILED 0Ec.12. 191s.

Patented Nov. 27, 1917.

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APPLICATION FILED DEC-12. 1916.

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UNITED STATES PATENT OFFICE.

JOHN EMIL WILLIAM GBEVE, 0F CHEMNITZ, GERMANY, ASSIGNOIR, T0 WANDERER- WERKE, VORMALS WINKLHOFER & JAENICKE, A. G., OF SCHON AU, BEI CHEMNITZ,

GERMANY.

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented Nov. 2'7, 1917.

Continuation and consolidation of applications Serial Nos. 716,478, 716,479, and 716,480, filed August 22,

1 912. This application filed December 12, 1916. Serial No. 136,442.

To all whom it may concern.

Be it known that I, J OHN EMIL WILLIAM Gnnvn, subject of the Em eror of Germany, residing at Chemnitz, axony, Germany, have invented certain new and useful Improvements in Calculating: Machines, of which thefollowing is a specification.

This invention relates to calculating machines, and particularly to the class 0 keyset machines, as set forth in my co-pending applications, Serial Numbers 7 16,47 8, 7 16,479, and 716,480, which were filed August 22, 1912, and of which this application is a continuation.

The primary object of the lnventlon 1s to construct a key-set machine comprising a series of mechanisms which combine to produce the complete machine.

In addition to the construction of a generally simplified machine, as above defined,

the invention has for its object to provide an improved arrangement comprising a single mechanism which can be set for addition and subtraction in very simple manner, and requiring a single means only for. the processes of both addition and subtraction. To this end, the computing mechanism consists in two sets or rows of counting wheels or disks, each of which rows is .arranged on a common shaft or axis, and said axes are located in such adjacent parallel relation that peripherally contiguous wheels are in constant operative engagement with each other, said counting wheels and axes being mounted in a movable housing and one of said rows of wheels being provided with numeral disks for displaying the total then being carried by the machine.

By this mechanism it is possible either to put one row or the other into operatlve engagement with the setting mechanism for the purpose of carrying out one or the other process.

A further object of the invention conslsts in constructing a controlling means for the computing mechanism which is so arranged that the computing mechanism can always be brought into operative position by the same controlling mechanism for all computkey-board mechanism.

ing steps, that is, for adding, subtracting,

and for making totals and Subtotals, and can then be returned to normal position after such computations are made.

Likewise, the invention consists in provlding a printing mechanism in which the printing means is so arranged that the zeros are automatically provided for, either to print them in single column work or to insure their proper omission in multiple column work; thus, the invention includes a mechanism for dividing the machine at will, within certain limits, into a plurality of columns.

"My invention furthermore contemplates, the provision, in combination with improved computing and printin ore particularly in this connection, the invention is designed to provide for the suitable locking and subsequent release of depressed keys by the locking mechanism, the mechanism acting both to lock the already depressed keys transmechanisms of a versely of their longitudinal alinement and to prevent a false depression of the keys or operation of levers after the beginning of the forward movement of the crank.

With the above and other objects in view, as will hereinafter appear, my invention will now be fully set forth and described, reference being had to the accompanying drawmg.

In said drawings Figure 1 is a side elevation of the machine,

By this motion or movement of the Fig. 2 is a plan view, Fig. 3 is a side elevation of the various mechanisms, parts being sectioned, and parts being broken away for the sake of clearness, Fig. 1 is a part plan and part sectlonal view of the key-board mechanlsm, the cover plate having been removed,

Fig. 5 is a section on line 55 of Fig. 4, Fig. 5 is a detail of one of the keys, Fig. 6 is a longitudinal sectional detail of a ortion of the key-board mechanism,

Fig. 7 is a section on line 7'7 of Flg. 6 looking in the direction of the arrow,

Fig. 7 is a plan view of the key-board locking mechanism,

Fig. 8 is a sectional view of the key and.

locking bar arrangement as seen from the front of the machine.

Fig. 8 is a side elevation of one of the locking-bars and its connect on to the number and type setting mechanism.

Fig. 9 is a detail view of a key-lock releasin device,

Figs. 10, 11 and 12 are views simllar to Fig. 9, showing the parts in different operative positions,

Fig. 13 is a detail sectional view taken longitudinally through the machine and showing only the printing mechanism,

Fig. 14 is a detail showing, in plan, of the printing mechanism setting device,

Fig. 15 is a detail of the setting device,

Fig. 16 is a front elevation, partly 1n section, of a splitting mechanism used in connection with the printing mechanism,

Fig. 17 is a longitudinal section through the machine and showing particularly the computing mechanism,

Fig. 18 is an enlarged detail view of the computing mechanism,

Figs. 19, 20, 21 and 22 are further detail views of the same mechanism showing the elements in various operative positions,

Fig. 23 is a side elevation of the controlling mechanism for the computing devices, the view being a longitudinal detail section through the machine,

Fig. 2 1 is a detail View of one of the parts,

Fig. 25 is a front view, partly in section, of the controlling mechanism, and

Fig. 26 is a similar view of the same parts, in different operative positions.

Referring more particularly to the drawings in Figs. 3, 5 and 6, 1 represents a main shaft, 2 a counter shaft and 3 a rigid carrier or supporting shaft, which are mounted transversely across a frame work 4, which in turn is inclosed within a casing A and secured in a base B. The shaft 1 is controlled by the crank lever or hand crank C located outside of the casing A, and actuates the shaft 2 through the medium of the gear segments 5 and 5, and motion of shaft 2 is communicated to the several mechanisms on shaft 3 and other organisms by the instrumentalities which are Keyboard mechanism.

The setting and controlling elements are located in a forward compartment of the casing A, and comprise generally speaking the number keys 6, a total key 7, a repeat key 8, locking keys 9 and 9", error key 10, a split key 11, a column key 232 and the adding and subtracting lever 13, together with the means for locking and releasing all of the keys. The numerals in each longitudinal row of keys run from 1 to 9, and mechanism is provided in the machine for setting zeros automatically, so that no particular setting of these is required.

A top plate 14, and lower plate 15 are carried by the casing A and base B, respectively, and form guiding supports for the number keys 6, the flattened spindles 16 of the latter riding vertically in registering slots in the plates. Springs 17 stretched between hooks formed in the lower ends of spindles or shanks 16 and longitudinal bars 18 mounted in rigid parallel relation on the frame 4:. normally hold the keys 6 in upraised or depressible position. It will be noted that the bars 18 are supported on studs 19. at the front of the frame 4 and are suspended from flanges 20 at the rear of the frame, and that one of the bars extends between eazh of the rows of keys 6. Below the ri id bars 18 the spindles 16 are also provide with the cars 21 which bear below the respective bars 18, when the keys are upraised, thereby acting as stops to their upward movement.

As shown in Fig. 5*, the spindles 16 are furthermore furnished with oppositely turned cars 22 which extend some distance vertically of the spindles and have their upper ends formed into rounded locking heads and their lower portions cut into wedge-shape, to cooperate with a locking 11.

mechanism. Overlying the rigid framework 4, but being held between the longitudinal members thereof, is a rectangular frame 23, which surrounds the whole bank of number keys and certain of the special keys. The frame 23 comprises the transverse end bars 24 having inwardly directed flanges, and the longitudinal side-plates 25, (see Fig. 7 The frame 23 is suspended between the side members of the rigid frame work 4 by means of links 26 (Fig. 5) pivoted at their upper ends upon the inner faces of the rigid frame and at their lower ends upon the outer faces of the longitudinal projections 27 on the side members 25. Extending longitudinally of the frame 23 is a set of parallel transversely swinging bars 28, which correspond in number to the number of the key rows, and consist of angle-bars having the overturned bearings 29 formed on the vertical 

